含硼聚硅铁的形貌结构研究方月梅

2010,Vol.27No.11　　　Chemistry&Bioengineering33　　　:2010-06-08:方月梅(1973-),女,湖北黄冈人,硕士,讲师,研究方向:水污染控制技术。E-mail:[e-mail]。,,　(,435003)　:向聚硅酸中引入Fe3+和硼,制得了稳定性更好的高效絮凝剂含硼聚硅铁(PFSB)。用电子显微镜观察分析了PFSB的形貌,用红外光谱和X-射线研究了其中硼、Fe3+及其水解产物与聚硅酸的相互作用情况,并对其电学特征进行了考察。结果表明,硼、Fe3+及其水解产物和聚硅酸等多种组分之间有相互作用,形成了尺度更大的聚集单元;PFSB的这种特殊结构是其具有良好稳定性和混凝性能的根本原因。:含硼聚硅铁;形貌结构;红外光谱;电学特征:TQ314.253　　　　　:A　　　　　:1672-5425(2010)11-0033-03　　(PFSS)。PFSS、、、[1～5],,。,,,、、、[4～11]。Fe3+(PFSB),、X-。PFSB,,,。1　1.1　Fe2(SO4)3·18H2O、、、NaOH,;(3.2,SiO228.3%)。PHS-25,XSP-XSZ,DBJ-623,AB104-N,DK-98-6021,VERTEX70,HI9835,D/MAX-ⅢAX-。1.2　,,pH,(),[n(B)∶n(Si)=0.16∶1、n(Fe)∶n(Si)=1∶3]、Fe2(SO4)3,,pH2.0PFSB。1.3　10d(),(60℃)160。1.4　60℃,,KBr,。2cm-1,60,400～4000cm-1。1.5　X-、PFSS、PFSB60℃,X-。1.6　PFSS[n(Fe)∶n(Si)=1∶3]PFSB。2　2.1　(1)1a,,。1b,Fe3+,。　:/20101134　　　1　(a)、(b)(c)Fig.1　Theelectronmicroscopeimagesofpolysilicicacid(a),PFSS(b)andPFSB(c),,“”。1c,PFSS,PFSB,,,。:(1)[7,8],;(2),-,,、,B-O-Fe、Si-O-Fe、Si-O-B、Si-OH…B,、。、,,、,。2.2　XRD(2)2　(a)、(b)(c)XRDFig.2　TheXRDpatternsofpolysilicicacid(a),PFSS(b)andPFSB(c)　　2,XRD。、PFSSPFSB,,15°～35°,、、、,、Fe3+、SO2-4,。,,、,。、Fe3+、OH-,,,X-,,。2.3　(3)3　Fig.3　TheIRspectraofPFSSandPFSB3,PFSBPFSS,1421cm-1、779cm-1,1421cm-1B-O,779cm-1Fe-O-B:/201011　35　　　[7～11];1228cm-1FeSi、FeFeOH[11]、883cm-1Fe-OH-Fe、590cm-1460cm-1Fe-O668cm-1Fe-O-H。,、、Fe3+。2.4　(4)4　Fig.4　TheelectricalconductivitiesofPFSSandPFSBasafunctionofagingtime4,,Fe3+。,,,B(OH)3H+。,,B(OH)3,,,,。,,。2.5　Fe3+--,,,,:OOH,104～105[12,13]。,,PFSB。,SO2-4,Fe3+--,Fe3+、SO2-4,Fe3+,。,、Fe3+、,。3　(1),、、。(2)X-:、PFSS、PFSBXRD,15°～35°,、、、,、Fe3+、SO2-4,。(3)PFSBFe-O-B、B-O,、、Fe3+。(4)Fe3+,,。(5),,Fe3+、,,,。:[1]　,.[J].,2004,24(6):45-47.[2]　.[D].:,1997.[3]　,,.[J].,1997,18(3):17-19.[4]　,,.[J].,2003,21(5):36-39.[5]　TakaoHasegawa,TakuyaOnitsuka,MinoruSuzuki,etal.Newpolysilicicacidcoagulantsandtheirproperties[C].WaterNagoya′89ASPACIWSA,1989,31S-05-A8,152-161.[6]　.[J].,1999,15(2):1-5.[7]　,,,.[J].,2000,17(8):459-462.[8]　,,,.[J].(),2001,27(6):661-665.[9]　,,,.[J].,2000,20(11):42-45.[10]　,,,.[J].(),2006,29(4):362-364,371.[11]　.、[D].:,1999.(下转第62页)　:B/20101162　　　1.23121.2057。PBBSA。PBBSA。Försterr1.98nm,E0.0393。[1]　DeepSA,HluwaliaJC.Interactionofbovineserumalbuminwithanionicsurfactants[J].PhysChem,2001,3(20):4583-4591.[2]　,,,.[J].,2004,32(3):317-319.[3]　,,,.[J].,2008,28(5):1135-1139.[4]　,,.[J].,1994,39(1):31-35.[5]　,,,.[J].,2006,34(6):796-800.[6]　RossDP,SubramanianS.Thermodynamicsofproteinassociationreactions:Forcescontributingtostability[J].Biochemistry,1981,20(11):3096-3099.[7]　CuiFL,WangJL,CuiYR,etal.FluorescentinvestigationoftheinteractionsbetweenN-(p-chlorophenyl)-N′-(1-naphthl)thioureaandserumalbumin:Synchronousfluorescencedeterminationofserumalbumin[J].AnalChimActa,2006,571(2):175-183.[8]　,,,.[J].,2009,29(1):236-239.InteractionbetweenPyronineBandBovineSerumAlbuminCHENLin-lin,TANGXiu-qin,DENGFan-zheng(CollegeofChemistryandMaterialScience,HuaibeiNormalUniversity,Huaibei235000,China)Abstract:TheinteractionbetweenpyronineB(PB)andbovineserumalbumin(BSA)wasstudiedundertheconditions(pHvalue7.4)ofTris-HClbufferbyfluorescencespectrometryandUV-visibleabsorptionspectros-copy.Theresearchshowedthattheinteraction,whichresultedinthefluorescencequenchingofBSA,belongedtoastaticquenchingmechanism.Andbycalculationthebindingconstantswere7.1105×105L·mol-1(298K)and5.2614×105L·mol-1(308K),andthebindingsiteswere1.2312(298K)and1.2057(308K).Thethermo-dynamicparametersshowedthattheinteractionbetweenPBandBSAwasmainlydrivenbyelectrostaticforce.SynchronousfluorescencespectrumwasusedtoinvestigatetheconformationalchangeofBSA.Theshor-testbindingdistance(r=1.98nm)andenergytransferefficiency(E=0.0393)betweendonor(BSA)andaccep-tor(PB)wereobtainedbyFörster′snonradiativeenergytransfermechanism.Keywords:pyronineB;bovineserumalbumin;interaction;fluorescencespectrometry(上接第35页)[12]　SpiroTG,AllertonSE,RennerJ,etal.Thehydrolyticpolymer-izationofiron(Ⅲ)[J].JAmChemSoc,1966,88(12):2721-2726.[13]　SommeyBA.Reactivityandaginginhydroxy-iron(Ⅲ)poly-mers,analogsofferritincores[J].BioinorgChem,1973,2(4):295-309.ResearchofMorphologyandStructureofFlocculantPolysilicate-FerricContainingBoronFANGYue-mei,ZHANGXiao-ling,WANGCheng(CollegeofEnvironment,HuangshiInstituteofTechnology,Huangshi435003,China)Abstract:Polysilicate-ferriccontainingboron(PFSB)waspreparedbyintroducingferricsaltandboronintopolysilicicacid.ThemorphologyofPFSBwasinvestigatedbyanelectronmicroscope.Theinteractionsbetweenboron,Fe3+anditshydrolysatesandpolysilicicacidwereexaminedbyIRandXRD.TheelectricalpropertiesofPFSBweremeasured.Theresultsshowedthattherewasaninteractionbetweenboron,Fe3+anditshydroly-satesandpolysilicicacid,producinganewbiggerpolymerflocculant.ItisthespecialstructureofPFSBthatmakesithashigherstabilityandbettercoagulationperformance.Keywords:polysilicate-ferriccontainingboron;morphologyandstructure;infraredspectrum;electricalproperty